In order to solve the problems of high code repetition rate and long development cycle in the software development process,the paper proposes a method for rapid software development by means of custom components.The related properties of the components in Delphi are used not only to inherit the parent class properties but also to add special properties and program code.By setting the relevant parameters of the form components,there is no need to input any code in the components such as add,delete,check and so on,to complete their functions to achieve rapid development.The test is carried out by adding components to the Delphi platform.The test results show that the custom components designed in this paper can quickly complete the program design in the actual software development.Compared with the traditional development method,the proposed method has the advantages of less Bug,convenient debugging,low code repetition rate,and easy program upgrade.